Shifting hopper for concrete work.



T. w. BAKER. I SHIFTING HOPPER FOR CONCRETE WORK;

APPLICATION FILED IAN-6.19M. I

1,272,354. Patented July 16, 1918.

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THOMAS W.'BAKER, OF VANCOUVER, BRITISH COLUMBIA, CANADA.

SHIFTING HOPPER FOR- CONCRETE WORK.

To all whome't may concern:

Be it known that I, THoMKs "W. BAKER, a citizen of the -United States of; America,

residing at Vancouver, in the Province of British Columbia and Dominion of Canada, have invented certain new and useful Improvements in Shifting Hoppers for Concrete Work; and I; do'hereby declare the following to be a full, clear, and exact description of the invention, such as will ena ble others skilled inth'e art to which it appertains to make and use the same.

This invention relates to new and useful improvements in shifting hoppers for concrete work and has for its principal object to provide a hopper which is vertically adjustable and which is especially adapted for use in constructing high buildings. walls and dams and similar structures using coarse concrete as the basis of a construction.

Another object of the invention is to provide an automatic means for dumping the contents of the hoisting bucket into the hopper.

A further object of the-invention is to provide a hopper which may be moved upwardly as the construction of-the building or other structure progresses without necessitating any inconvei'iience' to the user.

A further object or the invention is to provide a hopper support which 1s capable ofbeing used on either frameor metal hoisting towers.

A further and more specific object of the invention is to provide a novel hoisting bucket and frame for supporting the same. With these and other objects in view, the invention consists in the novel combination and arran ement of parts which will be fully set forth inthe following specification and accompanying" drawings, in which:

Figure 1 is a vertical sectional View of the hoistingtower sliow'ing the hopper, the; supporting frame therefor, the bucket and its supportingframe, 1

Fig. 2 is a fragmentary front-view 1nele vation of the hopper supporting] frame,

Fig. 3 is a vertical sectional view of the bucket illustrating the details of construction thereof.

Referringnow to the drawings by characters of reference, the numeral 1 designates as'a-n entirety the tower comprising the four uprights 2 which are connected by the. cross pieces 3,-w'h1ch cross pieces are diagonally braced by'thebrace rods 4'. Suitable guide Specification of Letterslatent.

Patented July 16, 1918.

. Application filed JanuaryG, 1915. Serial N 0'. 853.

tracks 5 are formed on the inner faces of two of the uprights 2 and these guides are designed to form a supporting means for the hopper frame which will be more fully hereinafter guides 5 are the guides 6 which are secured intermediate the front and rear sides of the .tower and these guides 6 are designedto described. Cooperating with the cooperate with the guides 5 in holding the hopper supporting frame, A suitable vertically extending guide 7 which projects throughout the entire length of the tower is secured to the sides thereof slightly in the rear of the guides 6 and these guides 7 are designed tofor'm tracks on which the bucket V lation by means of the channel bars 11 and 12. These channel bars 1 1 and 12'are riveted or otherwise secured as at 13 to the flanges of the channel bars 10 and thechannel bar 11 projects beyond these channel bars 10 as at 14' and-the ends 14 are'provided with suitable angle brackets which .form slides which are designed to travel on the uprights 2 of the tower 1. The lower ends ofthe channels 10 are held in spaced relation by means of the channel 15 which extends therebetween and connects the two and this channel 15 extends beyond the lateral extremities of the frame 9 as at 16, the angle plate is secured to the opposite end to provide a. guide similar to theguide previously mentioned and cooperates with the uprights 2 in holding thehopper frame in place. Extending rearwardly from the channels 1 0 are the connecting arms 17 which are spaced evenly apart and are riveted or otherwise secured to the angle plates 18 which are designed to support the channel sections .19, which slidably engage the guides 6 and the arms of which also exrods 17 and the channels 10 and channel sections 19, and these rods 20 are designed to stiffen the frame 9 to hold the same in proper position. The channel sections 19 are connected to each other in vertical alinement by the plates 19 which project below the lowermost channel section and flare outwar'dly to form the downwardly extending outstanding flanges 21 which assist in guid ing the rollers of the bucket into the channel. One of the flanges of each channnel is extended in the manner shown in the drawings to form the upstanding tongues 22 which cooperate with the plates in forming a guide at the upper end of the device. Riveted or otherwise secured to the upper angle plate 23 of the channels 19 are provided the guides 24 which'are curved outwardly as at 25 to form the guides 26 which are riveted or otherwise secured as at 27 to the'channels 10. A suitable hopper28 which is provided with the outlet chute 29'is supported between the channelslO and this hopper has the brace rods 30 which support the outer edge thereof. This hopper 28 is supported at a point slightly below the portion 26 of is the guides 24 so that when the bucket dumps,

downwardly over a suitable sheave to a hoisting engine or other suitable power generating device, and it will thusbe seen that.

when the power generating device is thrown into operation the frame 9 may be slid to i the desired position on the-tower.

The bucket hereinbefore referred to is designated generally by the numeral 34 and is carried in the frame designated by the numeral 35. .This bucket framecomprises the channels 36 which are designed to slide on the vertical guides 7 hereinbefore referred to. The upper and lower edges of these channels'are beveled as at 37 to avoid scratching on the guide. These channels are held in spaced parallel relation by means of the cross channels 38 which are held in place by the angle braces 39 and angle plates 40. Suitable plates 41 are secured to the lower terminals of the channel and the brackets 42 having formed therein the apertures 43 are secured to the plates 41 by rivets or bolts as at 44. The apertures 43 in these brackets 42 are arranged to receive the rounded ends 45 of the shaft 46 which is designed to support the bucket in operative position, Suitable set collars 47 surround the rounded ends 45 of the shaft 46 intermediate the their upper brackets 42 and the plates '41 as clearly shown in Fig. 4. These collars 47 are designed to prevent the unconnected ends of the channels 36 from swinging outwardly and permitting the bucket to drop.

. The bucket 34 hereinbefore referred to comprises the two angle bars 48 which are bent as clearly shown in Fig. 3 to form a v, the ends of the arms of whlch are spaced a distance considerably greater than the width of the bight portion. These angle bars are provided with the V-shaped end plates 49 which cooperate with the sheet 50 in forming a container for the bucket. Suitable U-shaped brackets 51' are riveted or otherwise secured as at 52 to the bight portion of the met 'allic sheet 50:.and these vbrackets are designed to fit over the shaft-46 toholdthe same in proper-position with relation to the bucket. Suitable reinforcing strips 53 extend across the forward and rearward sides of the bucketat theupper edges of the plates 50 and the end plates 49 are provided at strips 54. I p I r Rotatable on the smooth portion of the pins 59' are the rollers'68 which are provided with the bronze or Babbitt bushing 69 and the oil holes 70; I

A suitable roller 71 similar to the rollers 8 hereinbefore referred to is rotatably mounted on the reduced extension 59 of the shaft 60 and this roller is'designedfto engage the guide 8 of the tower 1 before the bucket reaches the hopper fram'e. As soonas the bucket attains the height of the lower portion of the hopper frame, it is apparent that the guide 8 is discontinued and the bucket depends on its forward'roller 68 to hold the same in a vertical position until it has reached theupper limit of travel.

It will be apparent from theiforegoing that in use the hopper 28 and frame 9 are hoisted to the proper position on the tower 1. The guide 8 which is preferably sectional .is thenplaced on the, tower and supported in such positlon. that its upper; end terminates at a point slightly above thelower extremity of thechannels'19 of the frame. 9.. The bucket may then be hoisted on its frame 35 which is slidable on the guide 7 by means of the cable. 72 whichpasses over the sheave 7 3 which is journaled in the frame on the shaft 74. Upon exerting pull on the cable 72, .it will be apparent that the bucket will rise with its load of mixed concrete and due to the fact that the majority of'the weight of the bucket is oifcentered toward the front of edges with the reinforcing' the tower, it will be apparent that the roller 71 will bear againstthe guides 8 until the rollers 69, shall have enteredthe's aacebe tween the flanges of the channels 19. Upon pulling the bucket and frame 35' farther up it will be apparentthat the weight of the bucket which is toward the front of the tower will tend to tip the bucket forwardly and due to the fact that the rollers 69 engage the flanges of the channels 19, will be apparent that the bucket will be held from turning. As soon as the bucket reaches the upper limit of travel it will be evident that the portions of the channels 19 will cause the bucket to be tilted slightly forward and uponfurther movement of the frame it will be evident that the rollers 69 will travel out on the tracks 26 and dump the contents of the bucket into the hopper. As soon as the bucket is lowered it will be apparent that it will again assume the position illustrated in the drawings and it may be dropped to the bottom of the tower to be again filled so that the user may build structures of any desired height by raising the hopper frame 9.

lVhile in the foregoing there has been shown and described the preferred embodiment of this invention, it is to be understood that such changes may be made in the combination and arrangement of parts as will fall within the spirit and scope of the appended claims.

\Vhat is claimed is v 1. An apparatus of the character set forth, comprising a tower, a frame slidably mounted in the tower, a hopper carried by the frame, frame raising and lowering means, a second frame slidably mounted in the tower, means for raising and lowering the second frame, a bucket pivoted in the second frame at a point to one side of its center of gravity to permit it to gravitate into a dumping position, a guide carried by the tower and terminating at a point below the hopper, a. roller carried by the bucket and engaging the guide to hold the bucket in upright position, a second guide carried by the first frame and terminating at apoint above the hopper and beginning at a point below the upper end of the first guide, a second roller carried by the bucket and adapted to engage the second guide to hold the bucket in upright position after the first roller passes upwardly beyond the first guide, and a track extending from the upper end of the second guide to and over the hopper to receive the second roller after it passes above the second guide.

2. An apparatus of the character set forth, including a tower provided with pairs of guides, a frame provided with pairs of channeled members slidably engaging said guides, a hopper secured to and between one pair of said channeled members, and bucket guides carried by the opposing sides of the other pair of channeled members.

3. An apparatus of the character set forth, including a tower provided with pairs of guides, a frame provided with pairs of channeled member slidably engaging said guides, a hopper secured to and between one pair of said channeled members, bucket guides car-- ried by the opposing sides of the other pair of channeled members, said bucket guides extending above and below the hopper, and tracks extending from the upper ends of the bucket guides to and over the hopper.

In testimony whereof I affix my signature in presence of two witnesses.

THOMAS \V. BAKER.

Witnesses L. M. CHRISTIE, E. G. JoHNsoN.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of yatenta,

Washington, D. 0." 

